The disclosed technology is generally directed towards communicating whether a small deployed (e.g., millimeter wave 5G) cell is capable of operating as a self-backhaul device and can thereby operate as a relay node for another network device's backhaul (e.g., integrated access and backhaul) traffic. Data communicated between network devices, such as an attribute in in the CellAccessRelatedInfo information element of the system information block (e.g., a SIB type 1) message, can be used to convey the self-backhaul capability information. The network device that is searching for a self-backhaul cell evaluates the self-backhaul data of another cell, along with other selection criteria, to determine if the other cell can serve as a backhaul link; if the criteria is met, that other cell is selected, otherwise another cell is searched for such a capability.
Legal claims defining the scope of protection, as filed with the USPTO.
1. A method, comprising: obtaining, by a first millimeter wave network cell comprising a processor, system information corresponding to a wireless network second millimeter wave network cell; evaluating, by the first millimeter wave network cell, the system information for a determination of whether the second millimeter wave network cell is capable of operating as a relay node to a self-backhaul link for the first millimeter wave network cell; and in response to the determination indicating that the second millimeter wave network cell is capable of operating as the relay node to the self-backhaul link for the first millimeter wave network cell, registering, by the first millimeter wave network cell, the first millimeter wave network cell with the second millimeter wave network cell for use as the relay node to the self-backhaul link for the first millimeter wave network cell.
2. The method of claim 1 , further comprising, communicating, by the first millimeter wave network cell, with the second millimeter wave network cell to obtain a master information block associated with the second millimeter wave network cell, and evaluating, by the first millimeter wave network cell, master information block parameter data in the master information block to determine that that the second millimeter wave network cell is not barred from use by the first millimeter wave network cell.
3. The method of claim 1 , wherein the system information corresponding to the second millimeter wave network cell comprises a system information block, and wherein the evaluating comprises evaluating a self-backhaul capable parameter value associated with the system information block.
4. The method of claim 1 , wherein the determination indicating that the second millimeter wave network cell is capable of operating as the relay node to the self-backhaul link for the first millimeter wave network cell comprises the determination indicating: that a self-backhaul capable parameter data value in the system information indicates that the second millimeter wave network cell is self-backhaul capable, that a public land mobile network identifier of the second millimeter wave network cell matches identity information associated with the first millimeter wave network cell, and that the second millimeter wave network cell satisfies at least a minimum signal level.
5. A first millimeter wave cell in a wireless communication system, comprising: a processor; and a memory that stores executable instructions that, when executed by the processor, facilitate performance of operations, the operations comprising: searching for a second millimeter wave cell to serve as a relay node to a self-backhaul link for the first millimeter wave cell, comprising, communicating with the second millimeter wave cell to obtain cell-capability information; evaluating the cell-capability information, comprising determining whether the second millimeter wave cell satisfies a first cell selection criterion of whether the second millimeter wave cell is self-backhaul capable and determining whether the second millimeter wave cell satisfies a second cell selection criterion other than the first cell selection criterion; and in response to the evaluating determining that the second millimeter wave cell is self-backhaul capable and the evaluating further determining that the second millimeter wave cell satisfies the second cell selection criterion, registering with the second millimeter wave cell to serve as the relay node to the self-backhaul link for the first millimeter wave cell.
6. The first millimeter wave cell of claim 5 , wherein the cell-capability information is first cell-capability information, and wherein the operations further comprise, in response to the determining that the second millimeter wave cell is not self-backhaul capable, communicating with a third millimeter wave cell to obtain second cell-capability information, evaluating the second cell-capability information, comprising determining whether the third millimeter wave cell is self-backhaul capable and determining whether the third millimeter wave cell satisfies a third cell selection criterion other than the first and second cell selection criteria, and in response to the evaluating the second cell-capability information determining that the third millimeter wave cell is self-backhaul capable and the evaluating the second cell-capability information further determining that the third millimeter wave cell satisfies the third cell selection criterion, registering to the third millimeter wave cell to serve as the relay node to the self-backhaul link for the first millimeter wave cell.
7. The first millimeter wave cell of claim 5 , wherein the operations further comprise communicating with the second millimeter wave cell to obtain a master information block associated with the second millimeter wave cell, and evaluating master information block parameter data in the master information block to determine that that the second millimeter wave cell is not prevented from being used by the first millimeter wave cell.
8. The first millimeter wave cell of claim 5 , wherein the determining whether the second millimeter wave cell is self-backhaul capable comprises obtaining a system information block associated with the second millimeter wave cell and evaluating parameter data in the system information block.
9. The first millimeter wave cell of claim 8 , wherein the system information block comprises a system information block type 1 (SIB1) data block, and wherein the parameter data in the system information block comprises an integrated access and backhaul capable parameter value.
10. The first millimeter wave cell of claim 9 , wherein the integrated access and backhaul capable parameter value is in a cell access related information (CellAccessRelatedInfo) information element of the system information block type 1 data block.
11. The first millimeter wave cell of claim 5 , wherein the determining that the second millimeter wave cell satisfies the second cell selection criterion comprises determining that a public land mobile network identifier of the second millimeter wave cell matches identity information associated with the first millimeter wave cell.
12. The first millimeter wave cell of claim 5 , wherein the determining that the second millimeter wave cell satisfies the second cell selection criterion comprises determining that that the second millimeter wave cell satisfies at least a specified minimum signal level.
13. The first millimeter wave cell of claim 5 , wherein the determining that the second millimeter wave cell satisfies the second cell selection criterion comprises determining that the second millimeter wave cell satisfies a RxLevMin threshold.
14. A non-transitory machine-readable medium, comprising executable instructions that, when executed by a processor of a first millimeter wave network cell, facilitate performance of operations, the operations comprising: communicating with a second millimeter wave network cell of a wireless communication system to obtain system information of the second millimeter wave network cell; evaluating the system information comprising determining whether the second millimeter wave network cell is capable of operating as a relay node to an integrated access and backhaul link for the first millimeter wave network cell; and in response to the determining indicating that the second millimeter wave network cell is capable of operating as the relay node to the integrated access and backhaul link for the first millimeter wave network cell, camping the first millimeter wave network cell on the second millimeter wave network cell, and communicating with the second millimeter wave network cell to send integrated access and backhaul traffic via the second millimeter wave network cell.
15. The non-transitory machine-readable medium of claim 14 , wherein the operations further comprise determining that the second millimeter wave network cell is not barred from usage by the first millimeter wave network cell.
16. The non-transitory machine-readable medium of claim 14 , wherein the communicating with the second millimeter wave network cell to obtain the system information comprises receiving a system information block from the second millimeter wave network cell, and wherein the determining whether the second millimeter wave network cell is capable of operating as the relay node to the integrated access and backhaul link for the first millimeter wave network cell comprises evaluating an integrated access and backhaul capability parameter value in the system information block.
17. The non-transitory machine-readable medium of claim 14 , wherein the determining whether the second millimeter wave network cell is capable of operating as the relay node to the integrated access and backhaul link for the first millimeter wave network cell comprises determining that an integrated access and backhaul parameter value in the system information indicates that the second millimeter wave network cell is integrated access and backhaul capable, determining that a public land mobile network identifier of the second millimeter wave network cell matches identity information associated with the first millimeter wave network cell, and determining that the second millimeter wave network cell satisfies at least a desired minimum signal level.
18. The non-transitory machine-readable medium of claim 17 , wherein the determining that the second millimeter wave network cell satisfies at least the desired minimum signal level comprises determining that the second millimeter wave network cell satisfies a RxLevMin threshold.
19. The non-transitory machine-readable medium of claim 16 , wherein the system information block comprises a system information block type 1 (SIB1) data block.
20. The non-transitory machine-readable medium of claim 19 , wherein the integrated access and backhaul capability parameter value is in a cell access related information (CellAccessRelatedInfo) information element of the system information block type 1 data block.
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July 12, 2019
April 13, 2021
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